Revert "netfilter: x_tables: Switch synchronization to RCU"
This reverts commit cc00bcaa. This (and the preceding) patch basically re-implemented the RCU mechanisms of patch 78454473 . That patch was replaced because of the performance problems that it created when replacing tables. Now, we have the same issue: the call to synchronize_rcu() makes replacing tables slower by as much as an order of magnitude. Prior to using RCU a script calling "iptables" approx. 200 times was taking 1.16s. With RCU this increased to 11.59s. Revert these patches and fix the issue in a different way. Signed-off-by:Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
parent
abe7034b